| Kalkar to Orthez | 657.48 mi (1,058.12 km) |
| Kalkar to Orvault | 470.04 mi (756.46 km) |
| Kalkar to Osny | 262.57 mi (422.57 km) |
| Kalkar to Ostwald | 229.06 mi (368.63 km) |
| Kalkar to Ouistreham | 334.09 mi (537.66 km) |
| Kalkar to Oullins | 421.65 mi (678.58 km) |
| Kalkar to Outreau | 215.49 mi (346.80 km) |
| Kalkar to Oyonnax | 379.92 mi (611.42 km) |
| Kalkar to Ozoir-la-Ferriere | 259.39 mi (417.44 km) |
| Kalkar to Pace | 435.73 mi (701.24 km) |
| Kalkar to Palaiseau | 274.99 mi (442.55 km) |
| Kalkar to Pamiers | 634.34 mi (1,020.87 km) |
| Kalkar to Panazol | 466.24 mi (750.34 km) |
| Kalkar to Pantin | 260.75 mi (419.64 km) |
| Kalkar to Paray-le-Monial | 378.30 mi (608.82 km) |
